Nylon-insert lock nuts (nyloc), ISO 7040 and DIN 985, M3–M36: width across flats, height, bearing diameter + M10–M30 envelope files — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/nylon-insert-lock-nuts-iso-7040-din-985/ (sheet CC BY 4.0) Basis: iTeh's ISO 7040:2012 sample Table 1 (M3 to M36), a DIN 985 sheet (M3 to M20), McMaster-Carr's DIN 985 listing as cross-check; six envelope files Catalog version: 2026-10-20 Overall (mm): length 30.0, width 26.0, height 22.8 - ISO 7040 columns (mm): P pitch; s width across flats (max / min); e across corners (min); dw bearing-face diameter (min); m nut-body height (min); h overall height including the insert collar (max / min). The M14 size is marked 'to be avoided' in the standard (brackets). Only coarse pitch is tabulated. iTeh's text says the dimensions correspond to ISO 4032 with the prevailing-torque feature added. - DIN 985 columns, as the sheet labels them: F width across flats (max / min), G across corners (min), H overall thickness (max / min), I wrenching height (min). DIN 985 and ISO 7040 are different heights: M10 is 10 mm overall in DIN 985 (McMaster also lists M10 as 17 mm wide by 10 mm high) but 11.9 mm max in ISO 7040, and the across-flats size differs from M10 up: DIN 985 17, 19, 22 for M10, M12, M14 against ISO 7040's 16, 18, 21. Up to M8 the across-flats sizes are the same (M3 5.5, M4 7, M5 8, M6 10, M8 13) while the overall heights differ (e.g. M6 6 in DIN 985 against 8 max in ISO 7040). The existing page nyloc-nuts-metric shows the DIN 985 heights for M2.5–M8. - Files: Xem-drawn envelopes for the ISO 7040 sizes M10, M12, M16, M20, M24, M30: a hexagon of the maximum width across flats, at the maximum overall height h, with a plain bore at the nominal thread diameter. The chamfer, the dome-shaped collar (outside diameter not given in the table) and the thread are not modelled; for a hex pocket, the width across flats and the overall height are the numbers you need. - Inch nylon-insert nuts: nylon-insert-lock-nuts-inch-asme-b18-16-6. McMaster-Carr sells DIN 985 nylon-insert locknuts with per-part STEP; the category is linked, not copied. standard thread P (mm) s / F max / min e (ISO) or G (DIN) min dw min (ISO) m min (ISO) h / H overall max / min I wrenching min (DIN 985) ISO 7040 (iTeh) M3 0.5 5.5 / 5.32 6.01 4.57 2.15 4.5 / 4.02 — ISO 7040 (iTeh) M4 0.7 7 / 6.78 7.66 5.88 2.9 6 / 5.52 — ISO 7040 (iTeh) M5 0.8 8 / 7.78 8.79 6.88 4.4 6.8 / 6.22 — ISO 7040 (iTeh) M6 1 10 / 9.78 11.05 8.88 4.9 8 / 7.42 — ISO 7040 (iTeh) M8 1.25 13 / 12.73 14.38 11.63 6.44 9.5 / 8.92 — ISO 7040 (iTeh) M10 1.5 16 / 15.73 17.77 14.63 8.04 11.9 / 11.2 — ISO 7040 (iTeh) M12 1.75 18 / 17.73 20.03 16.63 10.37 14.9 / 14.2 — ISO 7040 (iTeh) (M14) 2 21 / 20.67 23.36 19.64 12.1 17 / 15.9 — ISO 7040 (iTeh) M16 2 24 / 23.67 26.75 22.49 14.1 19.1 / 17.8 — ISO 7040 (iTeh) M20 2.5 30 / 29.16 32.95 27.7 16.9 22.8 / 20.7 — ISO 7040 (iTeh) M24 3 36 / 35 39.55 33.25 20.2 27.1 / 25 — ISO 7040 (iTeh) M30 3.5 46 / 45 50.85 42.75 24.3 32.6 / 30.1 — ISO 7040 (iTeh) M36 4 55 / 53.8 60.79 51.11 29.4 38.9 / 36.4 — DIN 985 (nut sheet, F G H I) M3 — 5.5 / 5.32 6.01 — — 4 / 3.7 2.4 DIN 985 (nut sheet, F G H I) M4 — 7 / 6.78 7.66 — — 5 / 4.7 2.9 DIN 985 (nut sheet, F G H I) M5 — 8 / 7.78 8.79 — — 5 / 4.7 3.2 DIN 985 (nut sheet, F G H I) M6 — 10 / 9.78 11.05 — — 6 / 5.7 4 DIN 985 (nut sheet, F G H I) M7 — 11 / 10.73 12.12 — — 7.5 / 7.14 4.7 DIN 985 (nut sheet, F G H I) M8 — 13 / 12.73 14.38 — — 8 / 7.64 5.5 DIN 985 (nut sheet, F G H I) M10 — 17 / 16.73 18.9 — — 10 / 9.64 6.5 DIN 985 (nut sheet, F G H I) M12 — 19 / 18.67 21.1 — — 12 / 11.57 8 DIN 985 (nut sheet, F G H I) M14 — 22 / 21.67 24.49 — — 14 / 13.3 9.5 DIN 985 (nut sheet, F G H I) M16 — 24 / 23.67 26.75 — — 16 / 15.3 10.5 DIN 985 (nut sheet, F G H I) M18 — 27 / 26.16 29.56 — — 18 / 17.66 13 DIN 985 (nut sheet, F G H I) M20 — 30 / 29.16 32.95 — — 20 / 18.7 14 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - iTeh Standards: ISO 7040:2012 sample pages, Table 1: da, dw, e, h, m, mw, s (max / min) for M3 to M36 — web — Standards-body sample pages; numbers only — https://cdn.standards.iteh.ai/samples/61363/a60b58fa5c3b449e81910d0a4b47c7e4/ISO-7040-2012.pdf - Cold-forged nut sheet (hosted on a Shopify CDN, maker not named in the text read): DIN 985 nylon insert lock nuts: F width across flats, G across corners, H thickness, I wrenching height, M3 to M20 — web — Maker datasheet; numbers only — https://cdn.shopify.com/s/files/1/0056/7856/3437/files/Metnutd985.pdf - McMaster-Carr: DIN 985 nylon-insert locknuts (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/din-985-nuts/ Free files (CC BY 4.0, Xem Studio; STEP + STL, 6 parts): https://xemstudio.com/files/hardware/nylon-insert-lock-nuts-iso-7040-din-985/index.json API: https://xemstudio.com/api/geometry?object=nylon-insert-lock-nuts-iso-7040-din-985